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No major > distro kernel enables it (Fedora, RHEL/CentOS Stream, Debian, Ubuntu, > openSUSE, Arch and the Android GKI defconfig, PREEMPT_RT flavors > included). I have no objection to removing it. > > There was an attempt to make it more useful: the Hierarchical Constant > Bandwidth Server (HCBS) patchset from Yuri Andriaccio and Luca Abeni. > It replaces RT_GROUP_SCHED with per-cgroup deadline servers and a > cgroup2 interface. The last posting was RFC v6 in June: > > https://lore.kernel.org/all/20260608121546.69910-1-yurand2000@gmail.com/ > > The effort seems to have stalled. Yuri is working on an updated version of the patchset... If everything goes well, a new RFC should arrive in few weeks :) Luca